Explanation:
B. leads to muscle strain.
Answer:
trips Hawkins founded electronic arts
Blu ! The formula is right THERE, IN the question. All you have to do is plug numbers into it.
The formula: Kinetic Energy = 1/2 m v²
' m ' is 2,000 kg
' v ' is 22 m/s
Now pluggum in:
KE = (1/2) (2,000 kg) (22 m/s)²
KE = (1/2) (2,000 kg) (22 m/s x 22 m/s)
KE = (1/2) (2,000 kg) (484 m²/s²)
I'm <u><em>sure</em></u> you can finish it off from this point, and pick the correct choice.
Answer:
1. The tension in the rope is everywhere the same.
2. The magnitudes of the forces exerted on the two objects by the rope are the same.
3. The forces exerted on the two objects by the rope must be in opposite directions.
Explanation:
"Massless ropes" do not have a<em> "net force"</em> which means that it is able to transmit the force from one end of the rope to the other end, perfectly. It is known for its property of having a total force of zero. In order to attain this property, the magnitude of the forces exerted on the two stationary objects by the rope are the same and in opposite direction. <u>So this explains number 2 & 3 answers.</u>
Since the objects that are held by the rope are stationary, then this means that the tension in the rope is also stationary. This means that the tension in the rope everywhere is the same (provided that the rope is still or in a straight line, as stated in the situation above, and is being held by two points). <u>So, this explains number 1.</u>
Answer:
6.2 ohm
Explanation:
Let R1 = 5 ohm
R2= 3 ohm
R3= 2 ohm
Since R3 and R2 are parallel then net resistance R' is given by
1/R' = 1/R2 + 1/R3
1/R' = 1/3 + 1/2
1/R' = 5/6
then
R' = 6/5 = 1.2 ohm
Now R1 and R' are in series, so
R = R1 + R'
R = 5 + 1.2
R = 6.2 ohm
